Upon the last chapter of Romans and its relation to the remainder of the epistle, see especially Farrars Life and Work of St. Paul, p. 450 sq., Weiss Einleitung in das N. T. p. 245 sq., Pfleiderers Urchristenthum, p. 145 , Renans Saint Paul, p. 461 sq. (maintaining that an editor has combined four copies of the one encyclical letter of Paul, addressed severally to as many different churches), Lightfoots Commentary on Philippians, p. 172 sq., and Schaff, Ch. History, I. p. 765.